Transportation appraisal report usually refers to a formal assessment document that certifies the safety and compliance of a certain commodity during transportation. Transportation agencies generally only accept test reports within one year. Domestically recognized report agencies include: UL, Shanghai Chemical Institute, DGM, etc. This type of report is particularly important for items considered dangerous goods, such as chemicals, flammable items, compressed gases, explosive items, toxic substances, etc. According to international and regional transportation regulations (such as the International Civil Aviation Organization's technical instructions or the International Maritime Organization's dangerous goods rules), transporting dangerous goods often requires a detailed appraisal report. This report should include a detailed description of the item, hazard classification, packaging instructions, emergency response measures, and any special handling or storage requirements. The purpose of the transportation appraisal report is to ensure the safety of goods during transportation and to prevent harm to the transport vehicle, environment, cargo handlers, or the public. For goods requiring international transportation, the transportation appraisal report is one of the essential documents for customs clearance and transportation. In some cases, this report may also include other types of assessments, such as the appraisal of the structural integrity, stability, and performance of equipment or machinery to ensure their safety and functionality during transportation.